infrastructure/modules/dgn-console.nix
Tom Hubrecht c5e15987ed
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feat(modules/dgn-console): Add an activation script showing system diffs
2024-01-07 18:17:14 +01:00

97 lines
2.9 KiB
Nix

{ config, lib, pkgs, ... }:
let
inherit (lib) mkEnableOption mkOption mkIf;
cfg = config.dgn-console;
in {
options.dgn-console = {
enable = mkEnableOption "DGNum console setup." // { default = true; };
pg-upgrade-to = mkOption {
type = lib.types.package;
default = pkgs.postgresql_15;
};
};
config = mkIf cfg.enable {
time.timeZone = "Europe/Paris";
console = { keyMap = "fr"; };
environment.variables.EDITOR = "nvim";
programs.neovim.vimAlias = true;
# services.nscd.enableNsncd = false;
nixpkgs.overlays = [
(final: prev: {
nsncd = pkgs.rustPlatform.buildRustPackage {
pname = "nsncd";
version = "unstable-2023-10-26";
src = pkgs.fetchFromGitHub {
owner = "nix-community";
repo = "nsncd";
rev = "47755a26ab3a45a47e55785eb112c817ba1e6bed";
hash = "sha256-CSIFbCwXj33t7QW7PTqOXRcOYP/ivTWmK+s/xBZd0VQ=";
};
cargoSha256 = "sha256-cUM7rYXWpJ0aMiurXBp15IlxAmf/x5uiodxEqBPCQT0=";
};
})
];
system.activationScripts.diff = {
supportsDryActivation = true;
text = ''
${pkgs.nvd}/bin/nvd --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"
'';
};
programs.bash.promptInit = ''
FQDN="$(hostname).$(domainname)"
# Provide a nice prompt if the terminal supports it.
if [ "$TERM" != "dumb" ] || [ -n "$INSIDE_EMACS" ]; then
PROMPT_COLOR="1;31m"
((UID)) && PROMPT_COLOR="1;32m"
if [ -n "$INSIDE_EMACS" ] || [ "$TERM" = "eterm" ] || [ "$TERM" = "eterm-color" ]; then
# Emacs term mode doesn't support xterm title escape sequence (\e]0;)
PS1="\n\[\033[$PROMPT_COLOR\][\u@$FQDN:\w]\\$\[\033[0m\] "
else
PS1="\n\[\033[$PROMPT_COLOR\][\[\e]0;\u@\H: \w\a\]\u@$FQDN:\w]\\$\[\033[0m\] "
fi
if test "$TERM" = "xterm"; then
PS1="\[\033]2;$FQDN:\u:\w\007\]$PS1"
fi
fi
'';
hardware.enableRedistributableFirmware = true;
environment.systemPackages = (with pkgs; [ neovim wget kitty.terminfo ])
++ lib.optional (config.services.postgresql.package != cfg.pg-upgrade-to)
(pkgs.writeScriptBin "upgrade-pg-cluster" ''
set -eux
# XXX it's perhaps advisable to stop all services that depend on postgresql
systemctl stop postgresql
export NEWDATA="/var/lib/postgresql/${cfg.pg-upgrade-to.psqlSchema}"
export NEWBIN="${cfg.pg-upgrade-to}/bin"
export OLDDATA="${config.services.postgresql.dataDir}"
export OLDBIN="${config.services.postgresql.package}/bin"
install -d -m 0700 -o postgres -g postgres "$NEWDATA"
cd "$NEWDATA"
sudo -u postgres $NEWBIN/initdb -D "$NEWDATA"
sudo -u postgres $NEWBIN/pg_upgrade \
--old-datadir "$OLDDATA" --new-datadir "$NEWDATA" \
--old-bindir $OLDBIN --new-bindir $NEWBIN \
"$@"
'');
};
}